Attachment for bicycles.



Patented Nov. 6, I900. 0. HAUSMANN.

ATTACHMENT FOR BILWCLES.

(Application filed Aug. 6, 1900.)

(No Model.)

QmSWanJ UNITED STATES PATENT OFFICE.

OTTO HAUSMANN, OF MINNEAPOLIS, MINNESOTA,

ATTACHMENT FOR BICYCLES.

SPECIFICATION forming part of Letters Patent No. 661,145, dated November6, 1900 Application filed August 6, 1900. Serial No. 26,083. (No model.?

To all whom/ it may concern.-

Be it known that I, 013150 HAUSMANN, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented a new and useful Attachment for Bicycles, ofwhich the following is a specification.

The invention relates to improvements in attachments for bicycles.

One object of the present invention is to improve the construction ofthat class of attachments which are adapted to prevent a bicycle fromtipping over and to provide a simple, inexpensive, and efficient deviceof this character adapted to maintain a bicycle in an upright positionwhen the same is subjected to a heavy weight.

Another object of the invention is to provide a device adapted to rendera bicycle safe and steady for heavy and elderly people and to enable thedevice to strengthen the frame of the bicycle.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a side elevation of a bicycle provided withan attachment constructed in accordance with this invention. Fig. 2 is arear elevation of the same. Fig. 3 is a detail perspective view of theouter plate of the clamp. Fig. 4 is a detail sectional View illustratingthe manner of adjustably mounting the spindles for the supplementalbalancing wheels.

Like numerals of reference designate corresponding parts in all thefigures of the drawangs.

1 .1 designate a pair of supplemental wheels located at opposite sidesof the rear wheel 2 of a bicycle 3 and connected with the frame thereofby the means hereinafter described,

-so that the bicycle will be retained positively in an upright positionand will be prevented from falling over on either side. Each Wheel 1 ismounted on a vertically-adjustable spin- .dle 4, having its outer endthreaded for the reception of a nut for securing the wheel 1 on it andprovided at its inner end with a shank 5, arranged in a vertical slot 6of an L-shaped portion 7 of a clamp 8. The spindle is proyided at theinner end of the shank 5 with a collar or flange 9 for engaging theouter face of the slotted arm 10 of the L-shaped portion 7 of the clamp,and the end of the shank is threaded for the reception of a nut 11,which engages the inner face of the vertical arm of the L-shaped portion7, whereby the spindle is firmly clamped at the desired adjustment andis rigidly connected with the said L- shaped portion of the clamp. TheL-shaped portion 7 has its arm 10 arranged approximately vertical, andits other arm 12 is horizontal and extends outward from the lower end ofan outer plate 13 of the clamp 8, the

latter being composedof the outer plate 13 and aninner plate 14.

The clamp,which is disposed approximately vertical, connects the rearinclined bar 15 of the frame of the bicycle with the bottom brace 16thereof, and thereby operates to strengthen and support thebicycle-frame and enable it to sustain a heavy weight. The rear or innerplateof the clamp is constructed the same as the outer plate, with theexception of being.

provided with the L-shaped portion 7, and the said inner or back platefits against the outer or front plate, as illustrated in'dotted lines inFig. 3 of the accompanying drawings. These plates 13 and 14 are providedwith upper and lower transverse grooves 17 and 18, formed by curving theplates outward and forming openings for the adjacent portions 15 and 16of the frame of the bicycle. The plates conform to the configuration ofthe frame of the bicycle and are provided at opposite sides' of theregistering grooves with perforations for the reception of suitablefastening devices'19 for connecting the inner and outer plates of theclamp, whereby the latter is firmly secured to the bicycle-frame. Theupper and lower grooves 17 and 18 are arranged at an angle to each otherto conform to the angle of the bars 15 and 16 of the bicycle-frame, andby this construction the clamp is prevented from slipping in eitherdirection on the bicycle-frame. The horizontal arms of the -L.-shapedportions of the clamps extend laterally from opposite sides of thebicycle, as clearly shown in Fig. 2 of the drawings, and the verticalarms 10 depend from the outer terminals of the horizontal arms, and aWide support or base for the bicyole is thus provided. This support willmain t-ain the bicycle in an upright position and will not interferewith the guiding of the same. The wheels 1 are vertically adjustable andthe attachment is adapted to be readily applied to an ordinary bicycleand does not necessitate any alteration of the construction thereof.

It will be seen that the attachment is exceedingly simple andinexpensive in construction, that it is adapted to maintain the bicyolein an upright position, and that it will enable heavy and elderlypersons to ride with safety. It will also be apparent that theattachment is adapted to strengthen and support the frame of thebicycle, and that it will assist the same in sustaining a heavy Weight.

What I claim is In a device of the class described, the COlllbinationwith a bicycle, of the approximately vertical clamp located at the backof the bicycle and connecting the rear bars at a point in advance of therear axle and composed of the inner and outer plates fitted together andprovided at their inner abutting faces with grooves forming openings forthe said rear bars, fastening devices connecting the plates, thedepending L-shaped portion formed integral with the lower end of theouter plate, a spindle adjustably mounted on the depending L-shapedportion, and a supplemental wheel arranged on the spindle, substantiallyas described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

OTTO HAUSMANN.

\Vitn esses:

F. DEPPE, A. C. MIDDELSTADT.

